they were not able to control their environment when they were traumatized. >> can you see? >> no, i'm blindfolded. >> reporter: this trust exercise forces justin to give up control to his partner. >> horse on your right. keep walking. you're fine. >> okay. >> reporter: the goal? to expose his old wounds. >> can he relate to you, do you think? >> yeah. >> reporter: watch how danny sets the stage for a major breakthrough. >> i went through a very difficult time, as well. very traumatic situation. it seemed so stupid at first and then it was actually helpful. therapeutic. you're okay. you're going to do just fine. >> and it was a breakthrough. it would have been taken me a year if i was meeting with justin in my office. >> reporter: lyz said she had never seen justin so vulnerable. two weeks later, one final exercise. it's aimed with justin coping his past. >> you abandoned all of us. i had to be the man of the family. >> reporter: inside the pen, justin is 9 years old again. the age when his sister was murdered and his father split. lyz plays the role of his dad. >> i get mor